Maximize multicloud resilience with Google Cloud DNS public IP health checks. Prevent downtime and keep your applications running without interruptions.
Multiple clouds are used by organisations to increase agility, optimise resource utilisation, and capitalise on the advantages of several cloud providers. It can be difficult to manage application traffic in these situations, though. Organisations want a system that can intelligently choose the best backend for every request in order to offer predictable services. The choice considers the location of the user as well as the current state of those backends. The ongoing monitoring of application endpoints across all clouds is essential to the dynamic traffic routing process because it provides the real-time information required to make wise decisions.
No matter where your workloads are located, Google Cloud DNS routing policies with public IP health checks are now generally available. This allows you to develop resilient applications by providing automated, health-aware traffic management.
Using several cloud providers frequently results in disjointed traffic management plans. With Google Cloud DNS, you can now use a single interface to dynamically route traffic across several cloud providers according to the health of your applications. Weighted round robin (WRR), geolocation, and failover are just a few of the routing policies that Google Cloud DNS provides, allowing you to customise your traffic management plan to meet your unique requirements.
To route traffic to backends that are in good condition, Google Cloud DNS employs health checks and routing policies. These health checks look at internet-based endpoints with any public IP address on other load balancers, cloud providers, or on-premises settings. Health checks are regionalised, starting from points of presence close to Google Cloud regions, to aid in better outage detection in multicloud setups. When most of these regional probes return a successful connection, the backend is deemed healthy. Google Cloud DNS routing policies automatically reroute traffic away from malfunctioning backends based on these health assessments. This automated procedure, which provides a critical layer of management and traffic shaping across your infrastructure, takes place at the DNS level.
Here are the steps to building a resilient multicloud architecture with Google Cloud DNS routing policies and public IP health checking:
Set up health checks
Enter the port of the application on the public IP address when configuring a HealthCheck resource in Compute Engine. Three geographically distinct Google Cloud regions must be chosen to serve as the health-check probes’ starting locations. Choosing areas that are most reflective of the user base is best practice. For instance, it would be wise to add areas from North America and Europe as sources for health checks if the program serves users from those regions.
Configure a failover routing policy and link it to the health check
In Google Cloud DNS, create a routing policy. Specify the public IP addresses of your apps in various cloud settings, along with the primary and backup destinations.
Fail over automatically
Depending on how the routing policy is set up and the condition of the backup endpoint, Google Cloud DNS may redirect traffic to the healthy instance in a different cloud if When two or three regions fail, an application instance becomes unhealthy. In order to provide failover throughout your multi-cloud infrastructure, the routing choice is made at the DNS level prior to traffic reaching the apps.
Health checks allow you to create cross-cloud and on-premise failover scenarios because they examine internet-based endpoints, which may be found anywhere on the internet. During an outage, traffic may be routed to on-premises sites or across providers, and services can be situated in different clouds. This reduces the operational complexity of managing various DNS configurations and streamlines traffic management by allowing you, as a multicloud client, to standardise on Google Cloud DNS for workloads. Additionally, you can verify that your routing policies are operating as intended and find any infrastructure problems with certain backends by using health check logging.
Deployments of several clouds are becoming more widespread. The automated, health-conscious traffic management required to handle the challenges of multicloud installations and aim for satisfying user experiences is made possible by this new Google Cloud DNS functionality.
